#2A1B8F#2A1B8F

#2A1B8F is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.8% C 0.177 H 277.1°. Best body text is #FFFFFF at 12.71:1 contrast (WCAG AA passes).

Color values

HEX	#2A1B8F
RGB	rgb(42, 27, 143)
HSL	hsl(248, 68%, 33%)
HSV	hsv(248, 81%, 56%)
CMYK	cmyk(70.6%, 81.1%, 0%, 43.9%)
CIE-LAB	lab(21.05, 42.68, -60.64)
CIE-LCH	lch(21.05, 74.15, 305.14°)
OKLab	oklab(33.84% 0.0218 -0.1752)
OKLCH	oklch(33.84% 0.177 277.1)
XYZ	xyz(6.3031, 3.2587, 26.2781)
Luminance	0.0326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A1B8F #808F1B

analogous

#1B468F #2A1B8F #641B8F

triadic

#2A1B8F #8F2A1B #1B8F2A

tetradic

#2A1B8F #8F1B46 #808F1B #1B8F64

square

#2A1B8F #8F1B46 #808F1B #1B8F64

split-complementary

#2A1B8F #8F641B #468F1B

monochromatic

#0C0828 #1B115C #2A1B8F #3925C2 #5B48DC

Accessibility & contrast

On white

12.71

#2A1B8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#2A1B8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A1B8F

12.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A1B8F	#FFFFFF	#000000	##FFFFFF
##2A1B8F	1.00	12.71	1.65	12.71
#FFFFFF	12.71	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003792

Deuteranopia (green-blind)

#002E8D

Tritanopia (blue-blind)

#003E55

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #2a1b8f;
/* rgb */ color: rgb(42, 27, 143);
/* oklch */ color: oklch(33.8% 0.177 277.1);

Tailwind

colors: {
  custom: {
    50: '#745bb1',
    500: '#2a1b8f',
    950: '#000000',
  },
}

SCSS

$custom: #2a1b8f;
$custom-light: #745bb1;
$custom-dark: #000000;

JSON

{
  "hex": "#2a1b8f",
  "rgb": {
    "r": 42,
    "g": 27,
    "b": 143
  },
  "hsl": {
    "h": 247.759,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.33835,
    "c": 0.17658,
    "h": 277.1
  },
  "luminance": 0.03259
}

Semantic roles & 50–950 ramp

primary

#2A1B8F

secondary

#AFBE48

accent

#EB3DD5

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #2A1B8F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →